Which stock and when should I buy? What is the price to buy and how do i know whether it is in the correct price range?

Hey! Spend 10 minutes in the National Library app to borrow a couple of books on value-investing, and learn more first before putting real money to work. Value-investing will answer (1) what to buy (2) when to buy and (3) what is the price to buy.

But i would encourage you to think of the geographical markets you want to invest in first. The singapore market is fairly small, with not that many opportunities, limited liquidity and the gains are not as huge (if you compare S&P500 versus STI).
I blog about value-investing quite abit (check out my profile).